Form clamp



Nov. 27, 1928.

H. H. LAMPERT FORM CLAMP Filed April 9, 1928 Patented Nov. 27, 1928.

UNITED STATES HENRY H. LAMPERT, OF CHICAGO, vLLINOIS.

FORM CLAMP.

Application ined April sa,

yThe main objects of this invention are to provide an improved form of clamp adapted for attachment to a tie element; to provide a clamp having an improved form and arrangement of integral fastening means for securing the tie element to the clamp without the use of wedges or other separate fastening means; and to provide a clamp of this kind which is adapted for use as a form clamp in connection with concrete construction work and partie larly for securing a tie band to a structural iape such as an I-beam.

Illustrative embodiments of this invention are shown in the accompanying drawing, wherein vFigure 1 is a transverse section of a girder mold having one form of clamp applied thereto. I

F ig. 2 is a perspective of the clamp shown in Fig. 1 and showing the tie band as it appears before it is kinked.

Fig. 3 is a view similar to Fig. 2 but showing the bridge elements bent to kink the tie band.

Fig. 4 is a perspective of another form of clamp embodying this invention and showing a round wire tie.

' Fig. 5 is a fragmentary section taken on the line 5-5 of Fig. 3.

In the construction shown, the improved clamps are used for securing flexible tie elements to a structural steel shape such as an I-beam 1. The girder mold isY suspended from the I-beam by the tie elements and includes the usual soitit section 2, battens 3 and spacer blocks 4.

The tie element may consist of a flat metal band 5, as shown in Figs. 1, 2, 3 and 5. or of a round wire 6 as shown in Fig. 4. The size of the tie element depends upon the kind of mold to which the clamps are applied.

Referring to the drawings, two types of clamps are shown. The clamp shown in Figs. 1, 2, 3 and 5 is adapted to bear Yagainst one edge of the structural shape for attachment to both ends of the tie band or tie wire. The clamp shown in Fig. 4 is secured to only one cnd of the tie band or tie wire and'thereforc one is used at each end of the tie.

The clamp is preferably a sheet metal stamping and, in the form shown in Figs. 1 2, 3 and rcomprises a support 7 having a pair of bearing portions 8 and 9 disposed at substantially right angles to each other so as to be adapted to engage an edge of the struc- 1928. serial No. 268,658.

tural shape as shown in Fig. 1. The support 7 is strengthened by reinforcing ribs 10 formedv at the corner thereof.

Formed in the bearing portion 8, is an opening 11 adapted to receive a bight 12 formed in one end of the tie band 5. EXtending through the bight 12, is a pin 13 which engages the inner face of the bearing portion 8 for securing this end of the tie band to the clamp. I

Parts of the bearing portion 9 are struck out therefrom to provide recesses 14 and overlying bridge elements 15 spanning the recesses and spaced from the plane of the bearing portion 9 to permit the tie element to pass between the bridge elements and the'bearing portion. The bridge 4elements 15 are bendable so that, when struck with a hammer or other suitable tool,`they kink the tie felement by forcing it vinto the .recesses 14, as shown in Figs. 3 and 5. 'Ihe bridge elements 15 may be formed in any desired size and shape to conform to the tie element with which the clamp is to be used.

In the embodiment shown in Fig. 4, the clamp comprises a bearing member 16 adapted to be supported on the upper face of the beam 1 and having one end thereof curled to provide a grip 17 adapted to embrace one edge of the beam flange.

Parts of the bearing member 16 are struck out to provide recesses 18 and overlying bridge elements 19. One end of the tie element passes between the bridge elements 19 and the bearing 16 and is kinked by pressure applied to the bridge elements.

The tie element is adjusted with respect to the clamp by a tool 2() comprising a shank which provides a handle and ahead 21 on which is pivotally mounted a U-shaped lockingr jaw 22, which straddles the head 21 and which is pivotally secured thereto by a pin 23. The parts are arranged so that, when the jaw relative to the handle, an opening is provided for receiving the tie element so as to permit the tool to grip the portion of the tie projecting beyond the clamp.

Tith the clamp shown in Figs. 1, 2 and 3. the tool is fulcrumed on the outer face of the bearing niember 8 for pulling the running part of the tie relative to the clamp. Vith the form shown in Fig. 4, the tool 20 may be fulcrumed on the outer surface of the grip 17.

22 is'swung to an angular position In setting up a mold With the clamp shown in Figs. 1, 2 and 3, one end of the tie is secured to the bearing 8 as shown in Figs. 2 and 3. The clamp is then supported on the top of the beam, as shown 'in Fig'l and the tie element is inserted through the battens 3 and soiiit section 2 and is then looped around the beam. The free end of the tie is then inserted through the passage between rthe bridge elements 15 and the bearing 9 and is then secured to the tool 20.

The tool 2O is then applied to tighten the vtie and, While the tie is held taut by means of the tool, the bridge elements 15 arel struck With a hammer to kink the til. 'll he tool 2O may then be removed for use lon other clamps and the projecting end o1c the tie is then bent so as to overlie the bridge lelements as shown in Figs. 3 and 5.

Ai/Vith the orin shown in Fig. el, one end of the tieis rigidly secured to a clamp and the clamp is then placed on top of the beam. The tie element is looped around the beam and mold sections and the other end is then inserted through another clamp similar to the one shown in Fig. 4. This clamp is then applied to the opposite edge oi the beam 1 and the tool 20 is then applied for pulling the tie relative to the second clamp. After the tie has been properly adjusted, the bridge elements of the. second clamp are bent to kink the tie. y y

Although but one specilic embodiment of this invention has been herein shown and described, it Will bennderstood that numerous details of the Vconstruction shown may be altered or omitted Without departing from the spirit of tiis invention as deiined by the following claim.

- claim:

A. device oi the class described comprising a support having a pair oi bearing portions disposed transversely of each other for engaging adjacent sides of a structural shane,one oi said portions having an opening for receiving a bight in one end of a -tie element, a separate pin adapted to extend through the bight or engaging said one poi-tien on lrespectively opposite sides oi' said opening, and a member struck out from the other of said portions to provile a recess and an overlying bridge element, said bridge elementand last named portion .defining a passage for the other end et said tie, said bridge element being bendable to kink said tie element into said recess.

Signed at Chicago this ft 1928.

day of Api-ii,

trauern. LAMrnRr. 

